- Replace OpenWeatherMap with Open-Meteo (no API key needed)
- 16-day forecast (up from 5 days)
- Historical climate averages as fallback beyond 16 days
- Auto-upgrade from climate to real forecast when available
- Fix Vacay WebSocket sync across devices (socket-ID exclusion instead of user-ID)
- Add GitHub release history tab in admin panel
- Show cluster count "1" for single map markers when zoomed out
- Add weather info panel in admin settings (replaces OpenWeatherMap key input)
- Update i18n translations (DE + EN)